[mythtv-users] High X CPU usage with 8400GS

[Christopher Meredith]

On Thu, May 28, 2009 at 11:38 AM, Nick F <nikos.f at gmail.com> wrote:
> On Thu, May 28, 2009 at 11:03 AM, Jim Stichnoth <stichnot at gmail.com> wrote:
>>
>> On Thu, May 28, 2009 at 8:43 AM, Jean-Yves Avenard <jyavenard at gmail.com>
>> wrote:
>> > Did you create a VDPAU playback profile ?
>> >
>> > Unless you do, you're not using VDPAU
>> I know that I'm not using VDPAU yet.  I'm just surprised that under
>> non-VDPAU conditions, this VDPAU-capable 8400 card causes so much CPU
>> load compared to the 7200 card.  I'm wondering if this is related to
>> the fact that the 8400 is a PCI version -- maybe the CPU is maxed out
>> by sending the decoded 720p video stream over the PCI bus, which
>> presumably wouldn't happen when VDPAU is doing the decoding.
>
> I have a 8400GS PCI card (that I use with an Atom 330 system).  Using VDPAU
> works wonderfully for Blu-rays, HD and SD.  It looks terrible with using
> anything other than VDPAU for me though.

Agreed. My 8400GS PCI replaced a much older 5200FX AGP card ($50 in
2005). Even the 5200 has better Xv playback than the 8400. OpenGL
performance was better too. The 8400GS is really only an HD playback
acceleration card. For any other purpose it is average at best.